This lightweight Mini File Belt Sander is primarily used to grind, deburr, sand, blend, and polish metal, fiberglass, and even wood surfaces. Powered by air (pneumatics), electricity, or rechargeable battery, the tool consists of an attachable arm extending out from its handle, which allows one to maneuver the abrasive belt to access awkward and hard-to-reach areas. Available are a variety of attachable arms designed for different applications, including curves and corners. Depending on make/model, standard features include: single-hand on/off paddle switch, three-position side handle, and offset contact arm.